Class 12 Physics Unit 2 Current Electricity

Current Electricity

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Class 12 Physics Unit 2 Current Electricity

Electric current

Example 2.1

Conventional Current

Drift velocity

Example 2.2

Microscopic model of current

Example 2.3

Example 2.4

ohm’s law

Example 2.5

Resistivity

Example 2.6

Example 2.7

Resistors in series and parallel

Example 2.8

Example 2.9

Example 2.10

Example 2.11

Example 2.12

Color code for Carbon resistors

Temperature dependence of resistivity

Example 2.13

Example 2.14

Energy and power in Electrical circuits

Example 2.15

Example 2.16

Electric cells and Batteries

Electromotive force and Determination of internal resistance

Example 2.17

Cells in series

Example 2.18

Cells in parallel

Example 2.19

Kirchhoff’s first rule (Current rule or Junction rule)

Example 2.20

Kirchhoff’s Second rule (Voltage rule or Loop rule)

Example 2.21

Example 2.22

Wheatstone’s bridge

Example 2.23

Example 2.24

Meter bridge

Example 2.25

Example 2.26

Potentiometer

Comparison of emf of two cells with a potentiometer

Measurement of internal resistance of a cell by potentiometer

Heating effect of current  and Joules Law

Example 2.27

Application of Joule’s heating effect

Example 2.28

Thermoelectric effect

Seebeck effect

Peltier effect

Thomson effect